General Description

The RT4809 is a DC-DC boost converter which is

designed to provide the power of PWM controller. The

RT4809 incorporates voltage mode, fixed-frequency,

pulse width modulation (PWM) circuitry with a built in

N-MOSFET to achieve high efficiency and fast

transient response. The RT4809 input operating range

is from 2.5V to 36V. The RT4809 is an optimized

design for wide output voltage range applications.

Features

 Boost Converter to Supply PVO Voltage 11V

 Cycle by Cycle Current Limit Protection

 2.5V to 36V Input Supply Voltage

 Fixed 1.3MHz Switching Frequency

 RoHS Compliant and Halogen Free

 Input Supply Under-Voltage Protection

Applications

 USB PD and Programmable Power Adapters